I'm an overweight, 260/5'11',bad kneed, low to no energy 52yr. old. My question is about after I eat anything from fruit to meat ,a sandwich, eggs, anything in my belly, breakfast, lunch, or dinner, after a short period of time (2hrs.) or less. I'm knocked out on the couch like I just took a strong seditive. I have tried to walk right away but come back and still pass out. After not much exercise, sometimes my limbs feel like concrete blocks. I used to be very active in sports and physical labor. No diebeits or digestive problems.